private void ReadNative(Queue <FolderState> subdirs, CancellationToken token)
{
Win32FindData find = new Win32FindData();
FolderState folderState = subdirs.Dequeue();
ScanningState state = folderState.State;
FolderItem parent = folderState.Folder;
bool findResult;
string parentPath = parent.FullName;
string searchPattern = PathUtils.CombineNoChecks(parentPath, "*");
if (!searchPattern.StartsWith(@"\\?\"))
{
searchPattern = @"\\?\" + searchPattern;
}
IntPtr hFind = FindFirstFileEx(searchPattern,
FindExInfoLevels.Basic, out find,
FindExSearchOps.NameMatch, IntPtr.Zero,
FindExFlags.LargeFetch);
if (hFind == InvalidHandle)
{
return;
}
FolderItem fileCollection = null;
FileItem firstFile = null;
bool subdirsAdded = false;
try {
do
{
string filePath = PathUtils.CombineNoChecks(parentPath, find.cFileName);
if (find.IsRelativeDirectory || SkipFile(state, find.cFileName, filePath))
{
// Skip these types of entries
findResult = FindNextFile(hFind, out find);
continue;
}
FileItemBase child;
if (find.IsDirectory)
{
FolderItem folder = new FolderItem(new WindowsScanFileInfo(find, filePath));
child = folder;
if (!find.IsSymbolicLink)
{
subdirsAdded = true;
subdirs.Enqueue(new FolderState(folder, state));
}
}
else
{
ExtensionItem extension = Extensions.GetOrAddFromPath(filePath);
FileItem file = new FileItem(new WindowsScanFileInfo(find, filePath), extension);
child = file;
if (!find.IsSymbolicLink)
{
TotalScannedSize += child.Size;
}
}
parent.AddItem(child, ref fileCollection, ref firstFile);
if (AsyncChecks(token))
{
return;
}
findResult = FindNextFile(hFind, out find);
} while (findResult);
if (!subdirsAdded)
{
parent.Finish();
}
//if (parent.IsWatched)
// parent.RaiseChanged(FileItemAction.ChildrenDone);
}
finally {
FindClose(hFind);
}
}